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4 years ago

What's greater 4/7 or 5/9 cause I have a stay at home quiz and I'm confused

Mathematics

2 answers:

nikklg [1K]4 years ago

6 0

4/7. Isgreater because the smaller the fraction the more its worth

garri49 [273]4 years ago

4 0

4/7 = 0.57
5/9 = 0.55

4/7 is the answer

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What is 57, 020, 000 expressed in scientific notation

Snezhnost [94]

Answer:

we write in form of (a x 10^n)

5.702 x 10⁷

3 0

1 year ago

Read 2 more answers

A sample size must be determined for estimating a population mean given that the confidence level is % and the desired margin o

Sauron [17]

Complete Question

The complete question is shown on the first uploaded image

Answer:

$n =290$

$n =129$

The correct option is D

Step-by-step explanation:

From the question we are told that

The margin of error is $E = 0.23$

The largest value is k = 15

The smallest value is u = 7

From the question we are told the confidence level is 95% , hence the level of significance is

$\alpha = (100 - 95 ) \%$

=> $\alpha = 0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally population standard deviation estimate is mathematically represented as

$\sigma = \frac{Range }{4}$

Here the Range is mathematically represented as

$Range = k - u$

=> $Range = 15 - 7$

=> $Range = 8$

=> $\sigma = \frac{8 }{4}$

=> $\sigma = 2$

Generally the sample size is mathematically represented as

$n = [\frac{Z_{\frac{\alpha }{2} } * \sigma }{E} ] ^2$

=> $n = [1.96 * 2 }{0.23} ] ^2$

=> $n =290$

Generally to obtain a conservatively small sample size the population standard deviation estimate becomes

=> $\sigma = \frac{Range }{6}$

=> $\sigma = \frac{8 }{6}$

=> $\sigma =1.333$

Generally the conservatively small sample size is mathematically evaluated as

$n = [\frac{Z_{\frac{\alpha }{2} } * \sigma }{E} ] ^2$

=> $n = [1.96 * 1.333 }{0.23} ] ^2$

=> $n =129$

6 0

3 years ago

What is the distance between the points (4, -2) and (-1, 10)?

velikii [3]

Answer:

d = 13 (distance between two points)

Step-by-step explanation:

(4, -2) and (-1, 10)

(X1, Y1) and (X2, y2)

distance between two points = d = sqrt (X2 - X1)² + (Y2 - Y1)²

d = √ (-1 - 4)² + (10 - (-2))²

d = √25 + 144

d = √169

d = 13 (distance between two points)

8 0

3 years ago

New shoes are on SALE. You find a pair you like for $85 dollars. But you only have $45 with you. So, you pay $40 and

andrew11 [14]

Answer:

Explanation:

The price of new shoes = $85

The amount paid for the shoes = $ 40

The balance amount for the shoes = $85 - $40 = $ 45

The rate of interest = 8%

The time period = 6 months = 0.5 years

Simple interest:

Simple interest = = $1.8

So, Amount = Principal + Interest

or, Amount = $45 + $1.8 = $ 46.8

<em>The balance amount owned in six months is $46.8</em>

3 0

3 years ago

What is the general form of the equation of a circle with its center at (-2, 1) and passing through (-4, 1)?

yawa3891 [41]

The equation of circle is:
(x-a)^2+(y-b)^2=r^2 where C(a, b) is the center.
In order to find r you have to find the distance between C(-2, 1) and let's say A(-4, 1)

The formula for distance is:
$\sqrt{ ( y_{A}-y_{C )^{2} + (x_{A}- x_{C )^{2} }$
r = 2

The equation of circle is
(x+2)^2+(y-1)^2=4

I hope that this is the answer that you were looking for and it has helped you.

5 0

3 years ago